Palmer sumner



Pf SUMNER.

Chimney- Cwl.

Patented Feb. 20, 1843.

No.l 2,964.

imam

UNITED sTATEs PATENT oEEroE.

PALMER SUMNER, OF NEW YORK, N. Y.

CHIMNEY-COWL.

Specicaton of Letters Patent No. 2,964, dated February 20, 1843.

T 0 all whom t may concern.'

Be it known that I, PALMER SUMNER, of the city of New York, in the Stateof New York, have invented a new and useful improvement in ventilatorsor smoke-dischargers which are usually applied to the tops of chimneysor other iues for facilitating the escape of smoke or noxious gases fromfireplaces or other apartments of a building, of which improvements thefollowing specification` taken in connection with the accompanying'drawings, forms a full and exact description, the nature and principlesof my said invention by which it may be distinguished from others oflike character, together with such parts thereof as I consider new andclaim as my discovery, being therein duly represented.

Figure l, of the drawings above specified, represents a side elevationof one of my improved ventilators as applied to the top of) a flue orchimney, the same exhibiting the position which the ventilator assumeswith respect to the wind or atmospheric current acting upon it. Fig. 2is a vertical, central and longitudinal section of the said ventilator,while Fig. 3, is a front elevation thereof, the same being taken in aplane at right angles to that of Fig. l, or so as to represent the mouthor opening of the ventilator.

A, Figs. l, 2, 3, may be supposed to exhibit the upper part of anordinary cylindrical smo-ke pipe, or a short piece of pipe or tube,suitably secured on the top of a chimney B, or a flue connecting withany apartment of a building from which it may be desirable to remove anysmoke, foul air or noxious eliiuvia. A cylindrical or inverted conicalfrustum pipe C Figs. l` 4, is fitted upon the top of the pipe A, bymeans of a rod or spindle D, Fig. 2, or by any other convenient andproper method as usually adopted by mechanics to secure a cowl upon theupperpart of a pipe', and to permit the former to be turned aboutthereon horizontally by the action of wind. This pipe C is cut olfdiagonally or in a plane, at about sixty degrees, more or less, to thehorizon as seen at a l) Figs. 1 and 2, and has a vane E so arranged uponits upper part or top b, that the action of the wind upon said vane,shall cause the mouth or elliptical opening a b of the tube C to bealways opposite to the quarter from whence the wind blows, the arrow Fin Figs. l, and 2 denoting the said direction of the wind in regard tothe opening a I). By this arrangement of the mechanism, as the windpasses in contact with, and by, the tube C, it creates a powerful rushor current of air up the chimney or flue, the extent whereof must be inproportion to the size of the opening a b. As, by my peculiarconstruction of the turning cowl or top C` Fig. 4, I am enabled toproduce a very large elliptic opening for the escape of the smoke.

I conceive that I have discovered a simple,cheap and effectiveimprovement, and in concluding my specification thereof I shall confinemy claim to the mode herein above described of constructing the turningpart of a chimney cowl or ventilator, that is to say, by forming thesame of a vertical inverted frustum which is cut off on its top in aplane inclined to the horizon and otherwise arranged as above set forth.

In testimony that the foregoing is a true description of my saidinvention and improvement I have hereto set my signature this tenth dayof October in the year eighteen hundred and forty two.

PALMER SUMNER.

IVitnesses Jos. P. PERssoNs, GEORGE A. LooKs.

